Client vs Patient

When to use each in English, with meaning, register, and examples.

Client

Top 2,000 (common)B1noun

Patient

Top 2,000 (common)A2noun
 ClientPatient
Pronunciation🇬🇧 //ˈklaɪənt//🇺🇸 //ˈklaɪənt//🇬🇧 /["/ˈpeɪʃnt/"]/🇺🇸 /["/ˈpeɪʃnt/"]/
MeaningA person or company that buys services.Someone who is sick and gets medical treatment.
ExampleThe consultant presented her ideas to the client.The doctor is very patient with his young patients.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB1A2
Part of speechnounnoun
Collocationsnew client, potential client, client relationship, client servicesAIDS, cancer, cardiac, assess, examine, see, develop something, have something, suffer from something, care, patient with, AIDS, cancer, cardiac, assess, examine, see, develop something, have something, suffer from something, care, patient with
Antonymsprovider, vendor, supplierimpatient
Common mistakesConfused with 'customer' - 'client' is more formal and often involves ongoing services., Use as 'an client' instead of 'a client' - 'client' starts with a consonant sound.Confused with 'patience' which means being calm while waiting., Using 'patience' instead of 'patient' when referring to a sick person.
Usage notesUsed in business contexts; suitable for both informal and formal situations. Avoid using in casual conversations unrelated to business.Used mostly in medical contexts. It is not appropriate to refer to someone as a 'patient' outside of healthcare settings.

Frequently asked questions: Client vs Patient

What's the difference between Client and Patient?

Client: A person or company that buys services. Patient: Someone who is sick and gets medical treatment.

Are Client and Patient the same CEFR level?

Client: B1, Patient: A2 on the CEFR scale.

Can I use Client and Patient interchangeably?

Not always. Client and Patient are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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